Article
Multidisciplinary Sciences
Amy Long, Simon R. M. Jones
Summary: Salmonid rickettsial septicemia is an emergent disease caused by Piscirickettsia salmonis in marine-farmed salmonids. The study found species-specific patterns of bacterial shedding and pathogenesis, as well as correlations between physiological parameters and bacterial burden in different fish species. The timing and magnitude of bacterial shedding in infected fish align with mortality, providing insights for pathogen transmission models.
Article
Fisheries
Masatoshi Ban, Hiromi Itou, Ayumi Nakashima, Iwao Sada, Shuuich Toda, Manabu Kagaya, Yoshinobu Hirama
Summary: This study investigated the effects of water temperature and salinity on the early development of chum salmon. The results showed that constant temperatures of 4 and 16 degrees Celsius, as well as salinities exceeding 1.0 psu during fertilization, can interfere with the normal early development of chum salmon. To increase survival rates, fertilization with groundwater and hardening of the egg envelope can be effective measures.
Article
Environmental Sciences
Yuxiao Gou, Tomihiko Higuchi, Yuki Iino, Tsuyoshi Nagasaka, Yuichi Shimizu, Kotaro Shirai, Takashi Kitagawa
Summary: This study determined the oxygen isotope fractionation equation for chum salmon and found that both oxygen and carbon isotopes deplete simultaneously in lower temperature settings.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Shigenori Nobata, Shouji Houki, Takashi Kitagawa, Susumu Hyodo
Summary: This study compared burst swimming velocity between wild and hatchery-reared chum salmon fry, finding that in hatchery-reared fry, velocity was correlated with condition factor, while in wild-reared fry, it varied widely and was not correlated with condition factor. This suggests that balanced growth in early developmental stages improves burst swimming velocity, and wild-reared fry may be influenced more by caution and various experiences rather than condition factor.
ICHTHYOLOGICAL RESEARCH
(2022)
Article
Fisheries
Kenji Minami, Hokuto Shirakawa, Yohei Kawauchi, Huamei Shao, Makoto Tomiyasu, Yuka Iwahara, Yuichi Tsuda, Hideo Takahara, Yanhui Zhu, Kazushi Miyashita
Summary: This study clarified the target strength of young chum salmon at different fork lengths, enabling the use of acoustic methods for biomass estimation.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Environmental Sciences
Subrata Kumar Ghosh, Marty Kwok-Shing Wong, Susumu Hyodo, Shuji Goto, Koji Hamasaki
Summary: This study investigated the effects of temperature on the bacterial community structure and diversity of temperate salmon in the Pacific. The results showed that temperature changes disrupted the balance of gut and skin microbiota, potentially affecting host immunity. Temperature also influenced the assembly processes of microbial communities, which may disrupt the equilibrium of the microbiota.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Tawni B. Riepe, Eric R. Fetherman, Brad Neuschwanger, Tracy Davis, Andrew Perkins, Dana L. Winkelman
Summary: This study assessed the vertical transmission of Renibacterium salmoninarum in cutthroat trout from a hatchery in Colorado, USA, and determined the transmission rate from male and female brood fish. The results showed high rates of vertical transmission among 60% of families across all infection treatments, but the average proportion of infected progeny from individual families was low, ranging from 1% to 21%.
JOURNAL OF FISH DISEASES
(2023)
Article
Fisheries
Donghyun Hong, Gea-Jae Joo, Eunsong Jung, Jeong-Soo Gim, Ki Baik Seong, Doo-Ho Kim, Maurice J. M. Lineman, Hyun-Woo Kim, Hyunbin Jo
Summary: This study analyzed the spatial distribution and morphological characteristics of chum salmon migrating to South Korea using the length-weight relationship. The research discovered a trend of less migration in the southern part of South Korea for all individuals migrating to South Korea. The weight ratio of males/females was also significantly different. The catch was negatively correlated with distance traveled and temperature, and positively correlated with pH, dissolved oxygen, distance, and female ratio.
Article
Geochemistry & Geophysics
Jilong Wang, Yongwen Gao, Wei Liu, Hongyan Zhang, David L. Dettman
Summary: Stable isotope analysis of chum salmon otoliths in China revealed the presence of two distinct spawning populations or stocks based on delta O-18 values, indicating anadromous behavior similar to other populations worldwide.
APPLIED GEOCHEMISTRY
(2021)
Article
Food Science & Technology
Hong-Fang Liu, Xiao-Wen Pan, Hua-Qiang Li, Xiao-Nan Zhang, Xin-Huai Zhao
Summary: A gelatin hydrolysate with a hydrolysis degree of 13.7% was generated using chum salmon skin gelatin and papain-catalyzed enzymatic hydrolysis. The gelatin hydrolysate contained four abundant amino acids, namely Ala, Gly, Pro, and 4-Hyp, which accounted for 2/3 of the total measured amino acids. The hydrolysate showed an in vitro antiapoptotic effect on etoposide-stimulated osteoblasts via mitochondrial-mediated JNKK/JNK(1,3)/Bax downregulation.
Article
Marine & Freshwater Biology
A. M. Kaev, L. V. Romasenko, D. A. Kaev
Summary: The number of juvenile chum salmon released from the salmon fish hatcheries on Iturup Island has increased significantly over the past 20 years, resulting in growth retardation in the early marine stage of fish released in large numbers, but the growth pattern in open sea waters remains unchanged. Additionally, the statement that older salmon deplete the carrying capacity of the North Pacific and adjacent Far Eastern seas appears to lack scientific basis.
RUSSIAN JOURNAL OF MARINE BIOLOGY
(2021)
Article
Fisheries
Mickey Agha, James P. Losee, Marisa N. C. Litz, Craig Smith, Jason J. Schaffler, William S. Patton, Aaron M. Dufault, Gabe M. Madel
Summary: The study found that adult fall and winter ecotype chum salmon in South Puget Sound, Washington State, are migrating earlier over time, especially the winter ecotype. These shifts in migration timing are closely associated with regional marine climate regimes, freshwater availability at the local scale, and increasing pinniped abundance.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
Article
Veterinary Sciences
Aimee N. N. Reed, Freya E. E. Rowland, Jennifer A. A. Krajcik, Donald E. E. Tillitt
Summary: Steelhead fry reared in Oregon hatcheries have a high mortality rate and show signs of vitamin B1 deficiency. This study explores whether thiamine supplementation can improve their health and survival. The results demonstrate that thiamine-treated fry had significantly higher survival and growth rates compared to those without thiamine supplementation.
VETERINARY SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Evgeniya V. Pushchina, Ilya A. Kapustyanov, Ekaterina V. Shamshurina, Anatoly A. Varaksin
Summary: This study utilized mouse rAAV vectors to express GCaMP6m in brain cells of juvenile chum salmon, with subsequent determination of the labeled cell phenotype through CLSM analysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Fisheries
W. I. Atlas, K. L. Wilson, C. K. Whitney, J. E. Moody, C. N. Service, M. Reid, M. R. Sloat
Summary: In recent decades, chum salmon on the Central and North Coasts of British Columbia have experienced declining abundance, with only a few populations remaining stable. The Bella Coola enhanced chum population has shown an increasing trend, but with significant variation in run sizes. Given concerns about the long-term health of chum salmon and their supporting ecosystems, commercial fisheries in the region have been closed.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
